MASK27            985 src/dps8/dps8_cpu.c     cpu.rTR      = MASK27;
MASK27           1604 src/dps8/dps8_cpu.c     cpu.rTR = (cpu.rTR - 16u) & MASK27;
MASK27           2827 src/dps8/dps8_cpu.c                     cpu.shadowTR = (cpu.shadowTR - 1) & MASK27;
MASK27           2876 src/dps8/dps8_cpu.c         if (cpu.rTR & ~MASK27)
MASK27           2878 src/dps8/dps8_cpu.c             cpu.rTR &= MASK27;
MASK27           3638 src/dps8/dps8_cpu.c                       cpu.rTR = (cpu.rTR - ticks) & MASK27;
MASK27           3641 src/dps8/dps8_cpu.c                     cpu.rTR = (cpu.rTR - ticks) & MASK27;
MASK27           3644 src/dps8/dps8_cpu.c                     cpu.rTR = MASK27;
MASK27           3679 src/dps8/dps8_cpu.c                       cpu.rTR = MASK27;
MASK27           3718 src/dps8/dps8_cpu.c                       cpu.rTR = (cpu.rTR - sys_opts.sys_poll_interval * 512) & MASK27;
MASK27           3721 src/dps8/dps8_cpu.c                     cpu.rTR = (cpu.rTR - sys_opts.sys_poll_interval * 512) & MASK27;
MASK27           3723 src/dps8/dps8_cpu.c                     cpu.rTR = MASK27;
MASK27           2004 src/dps8/dps8_eis.c     if (cpu.rTR & ~MASK27)
MASK27           2006 src/dps8/dps8_eis.c         cpu.rTR &= MASK27;
MASK27           3911 src/dps8/dps8_ins.c             cpu.Yblock8[7] = (((-- cpu.shadowTR) & MASK27) << 9) | (cpu.rRALR & 07);
MASK27           3913 src/dps8/dps8_ins.c             cpu.Yblock8[7] = ((cpu.rTR & MASK27) << 9) | (cpu.rRALR & 07);
MASK27           4111 src/dps8/dps8_ins.c             cpu.CY = (((uint) (((int) cpu.shadowTR) - 1)) & MASK27) << 9;
MASK27           4113 src/dps8/dps8_ins.c             cpu.CY = (cpu.rTR & MASK27) << 9;
MASK27           7719 src/dps8/dps8_ins.c           cpu.rTR = (cpu.CY >> 9) & MASK27;
MASK27           2138 src/dps8/dps8_utils.c 
MASK27           2151 src/dps8/dps8_utils.c 
MASK27           2155 src/dps8/dps8_utils.c